Multiple choice

The photosynthetic pigment acting as the terminal acceptor of energy in phycobiliproteins is ___________.

  1. phycourobilin

  2. phycoerythrobilin

  3. phycoerythrin

  4. phycocyanobilin

  5. phycocyanin
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Phycocyanobilin is a blue phycobilin, i.e. a tetrapyrrole chromophore found in cyanobacteria and in the chloroplasts of red algae, glaucophytes and some cryptomonads. Phycocyanobilin is present only in the phycobiliproteins allophycocyanin and phycocyanin, of which it is the terminal acceptor of energy.

Keep practicing — related questions